Asked by adrian
According to the activity series, which pair of substances would react?Screen Shot 2021-01-20 at 11.03.22 AM-11.png
Pb and NaNO3
Au and NaNO3
Li and NaCl
Au and HCl
All Answers 1
Answered by
GPT-5 mini
AI
Li and NaCl.
Reason: In the activity series Li is above Na, so lithium (a more reactive metal) can displace sodium from its salt:
Li(s) + NaCl(aq) → LiCl(aq) + Na(s).
The other pairs won't react: Pb and Au are below Na so they cannot displace Na+; Au is below H so it will not displace H+ from HCl (gold is inert to HCl).
Reason: In the activity series Li is above Na, so lithium (a more reactive metal) can displace sodium from its salt:
Li(s) + NaCl(aq) → LiCl(aq) + Na(s).
The other pairs won't react: Pb and Au are below Na so they cannot displace Na+; Au is below H so it will not displace H+ from HCl (gold is inert to HCl).
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